Образуйте степени сравнения:
Merry, hot, yellow, fat, clever, serious, expensive, low, lazy, blue, stupid, valuable, good, happy, necessary, active, cold, far, high.
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Merrier, hotter, more yellow/yellower, fatter, more clevr/cleverer, more serious, more expensive, lower, lazier, bluer, more stupid/stupider, more valuable, better, happier, more necessary, more active, colder, farther, higher.